Orazio lugo



UNITED STATES PATENT OEEIOE.v

ORAZIO LUeo, OE NEw YORK, N. Y.

TELEGRAPHIC RELAY.

SPECIFICATION forming part of Letters Patent No. 250,269, dated November 29, 1881.

Application filed September 3, 1880. (Model.)

To all 'whom tt may concern:

Beit known that I, ORAZIO LUGO, of the city, county, and State of New York, have invented certain new and useful Improvements in Telegraphic Relays, of which the following is a specification.

The object of my invention is to e'ect the proper adjustment'of the armature ofl a relay with reference to the strength of action of the electro-magnet by operation of gravity, and to dispense with the usual adjustable retracting-spring employed for that purpose. I accomplish this by providing` for shifting the center of gravity of the armature so that its own weight may serve to regulate the force of its retracting tendency when the circuit is broken.

In the accompanying drawings, which illustrate the embodiment ot' my invention that I prefer to employ, Figure 1 is a side elevation of a relay embracing my improvements. Fig. 2 is a side view of adjusting devices, and Fig. 3 shows a formal modification relating to the armature.

A indicates the base of the instrument, hinged to a table at a.

B indicatesaquadrant, upon which a slotted slide, O, connected to the arm C', projecting from the base, slides when the instrument is swung on its hinge.

A set-screw, D, isv provided in the slide-piece to secure the instrument at any point upon the quadrant at which it may be elevated to give it anyinclination desired.

Operating in connection with the arm and slide-piece, when needed for very nice adjustments, is a line-threaded or slow-motion screw,

E, the function of which is to slightly raise or.

lower the arm C' upon the quadrant.

Theinstrument mounted upon the base A is constructed in the usual way, as appears from the drawings, and therefore need notv be described in detail, except that the armature is free-that is, withoutaretracting-spring-and is provided with a suitable small weight, F, as shown in Fig. l, normally tending to retract it from the electro-magnet. l

In Fig. 2 the armature is shown as pivoted at its top with its stops atits bottom.

Instead of specially providing a weight, as shown in Fig. I, the weight ofthe armature itself may be relied upon to operate it very Well.

From the foregoing it is apparent that swinging up the instrument more or less from a horizontal position will throw the armature more or less out of perpendicular, aud hence increase or diminish its tendency to retract by the action of gravity. Thus the same beneficial adjustment with reference to theopposing action of the electro-magnet that has heretofore been secured by means of an adjustable retracting-spring is attained in quite anotlIeI` way, and by means of' the two screws D and `E great delicacy and exactness of adjustment are secured.

Having thus described my improvements, whatIclaim as new, and desire to secure by Letters Patent, is-

l. The combination, with a telegraphic relay, of a hinge upon one end and a quadrant and suitable fastening devices upon the other end, whereby the instrument may be pivoted and adjusted at any desired inclination from a horizontal line, substantially as described.

2. The combination, in a telegraphic relay, ofa free pivoted armature, with or without a retracting-weight, with a hinged base for the instrument` whereby it may be tilted or inclined at will to throw the armature moreor less out of perpendicular, substantially as and for the purpose described.

ORAZIO LUGO.

Witnesses MILLER G. EARL, NELSON ZABRIsKIE, 

